ti ##kal project excavated a massive trench across the complex , thoroughly investigating its construction history . it is a complex group with construction beginning in the pre ##class ##ic period , around 350 bc . it developed into a fun ##era ##ry complex for the ruling dynasty of the classic period , with each additional royal burial adding new temples on top of the older structures . after ad 400 a row of tall pyramid ##s was added to the earlier northern platform , which measured 100 by 80 metres ( 330 by 260 ft ) , gradually hiding it from view . eight temple pyramid ##s were built in the 6th century ad , each of them had an elaborate roof ##comb and a stairway flanked
tikal project excavated a massive trench across the complex, thoroughly investigating its construction history. it is a complex group with construction beginning in the preclassic period, around 350 bc. it developed into a funerary complex for the ruling dynasty of the classic period, with each additional royal burial adding new temples on top of the older structures. after ad 400 a row of tall pyramids was added to the earlier northern platform, which measured 100 by 80 metres ( 330 by 260 ft ), gradually hiding it from view. eight temple pyramids were built in the 6th century ad, each of them had an elaborate roofcomb and a stairway flanked